Andrew Castellaneta Omnicom Group Inc. (OMC) insider trading activity

Andrew Castellaneta is SVP, Chief Accounting Officer of OMNICOM GROUP INC.. Currently has a direct ownership of 21,875 shares of OMC, which is worth approximately $1.69 Million. The most recent transaction as insider was on Aug 15, 2025, when has been sold 1,850 shares (Common Stock, par value $0.15 per share) at a price of $76.31 per share, resulting in proceeds of $141,173. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 21.9K

7.09% 3M change

20.45% 12M change

Total Value Held $1.69 Million

Andrew Castellaneta Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Aug 15 2025	SELL Payment of exercise price or tax liability	$141,173 $76.31 p/Share	1,850 Reduced 7.8%	21,875 Common Stock, par valu...
Oct 18 2024	SELL Open market or private sale	$421,000 $105.25 p/Share	4,000 Reduced 14.52%	23,545 Common Stock, par valu...
Aug 15 2024	SELL Payment of exercise price or tax liability	$256,854 $96.2 p/Share	2,670 Reduced 8.85%	27,499 Common Stock, par valu...
Nov 02 2023	SELL Open market or private sale	$252,714 $76.58 p/Share	3,300 Reduced 9.91%	30,014 Common Stock, par valu...
Aug 15 2023	SELL Payment of exercise price or tax liability	$211,278 $80.06 p/Share	2,639 Reduced 7.35%	33,255 Common Stock, par valu...
Jul 14 2023	BUY Grant, award, or other acquisition	-	4,675 Added 11.52%	35,894 Common Stock, par valu...
Feb 10 2023	SELL Open market or private sale	$556,800 $92.8 p/Share	6,000 Reduced 16.16%	31,121 Common Stock, par valu...
Aug 15 2022	SELL Payment of exercise price or tax liability	$167,764 $72.25 p/Share	2,322 Reduced 5.9%	37,001 Common Stock, par valu...
Jun 30 2022	BUY Grant, award, or other acquisition	-	7,075 Added 15.25%	39,323 Common Stock, par valu...
Feb 11 2022	SELL Open market or private sale	$427,350 $85.47 p/Share	5,000 Reduced 13.47%	32,131 Common Stock, par valu...
Aug 15 2021	SELL Payment of exercise price or tax liability	$158,294 $75.45 p/Share	2,098 Reduced 5.36%	37,014 Common Stock, par valu...
Jun 30 2021	BUY Grant, award, or other acquisition	-	5,625 Added 12.58%	39,084 Common Stock, par valu...

Andrew Castellaneta

SVP, Chief Accounting Officer

New York, NY

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